Urinary incontinence in dogs (urine leakage)
An incontinent dog loses urine without realizing it. A wet spot or puddle may be found where the dog was sleeping, or urine drips while walking. The dog urinates normally when taken outside. This is not a housetraining issue: the dog does n...
What is it?
An incontinent dog loses urine without realizing it. A wet spot or puddle may be found where the dog was sleeping, or urine drips while walking. The dog urinates normally when taken outside. This is not a housetraining issue: the dog does not choose to urinate and does not feel the leak. Scolding is pointless. The most common cause is weakness of the bladder's sphincter muscle in spayed bitches, often middle-aged or older. In a young bitch that has been leaking since puppyhood, a birth defect is suspected. Leakage together with weakness in the hind legs suggests a spinal cord problem. It is important to distinguish incontinence from a dog that drinks and urinates excessively, and from a urinary tract infection: the causes and treatments differ.
Commonly observed signs
These signs are neither exhaustive nor specific. Only a veterinarian can establish a diagnosis.
Related signs — each one links to its page:
A wet spot or puddle of urine on the bedding, especially after sleep or lying down for a long time. Drops of urine while walking or getting up. Wet hair and urine odor around the vulva or sheath. Red, irritated skin from urine in this area. Frequent licking of the genital area. The dog urinates normally on walks, without straining or repeated urges. In a young bitch with a birth defect: continuous leakage from an early age.
When to consult without delay
This list does not replace veterinary advice. It gathers situations that justify a prompt consultation.
Causes and risk factors
Weakness of the bladder sphincter: this is the most common cause, especially in spayed bitches. The drop in hormones after spaying plays a role, but other factors are involved. Ectopic ureter: a birth defect where a ureter, the tube that carries urine from the kidney, opens in the wrong place, below the bladder. It causes continuous leakage in young dogs, particularly females. Nerve damage: a herniated disc or spinal cord disease can disrupt bladder control. Bladder overflow: when the bladder no longer empties due to an obstruction or nerve problem, it becomes overfull and urine leaks out drop by drop. This is called overflow incontinence.
Spayed bitch, middle-aged or older. Young bitch leaking since puppyhood: ectopic ureter. Spinal cord or back disease. Advanced age.
Diagnosis and care
Diagnosis is the veterinarian's responsibility, based on clinical examination and laboratory tests. Care is decided case by case.
The veterinarian will ask when leakage occurs: while sleeping, when walking, or constantly. They will also ask whether your dog is drinking more than before and whether it strains to urinate.
They will examine the genital area, feel the bladder, observe your dog urinating if possible, and check the nerve function of the hind legs and tail.
Urine analysis will look for infection, sugar, or urine that is too dilute, which might suggest a condition causing increased drinking.
Blood work will check for diabetes, Cushing's syndrome, or kidney disease if your dog is drinking excessively.
Ultrasound or further examination, sometimes endoscopy, will look for abnormalities such as an ectopic ureter.
Treatment
Treatment depends on the cause.
For sphincter weakness, medications that strengthen bladder closure often produce good results; these are prescribed and monitored by your veterinarian, often long-term.
When medications are insufficient, surgical techniques or injections near the urethra are available at certain centres.
Ectopic ureter is corrected by surgery or using an endoscopic technique.
Nerve damage or obstruction are treated on their own.
Day-to-day management: use washable bedding and gently clean and dry the affected area to prevent urine scald.
Never withhold water from your dog to limit leakage: this risks dehydration and urinary infection.
Treatment depends on the cause and the animal's condition: it must be determined by a veterinarian. No self-medication.
Prevention
There is no reliable way to prevent sphincter weakness.
The timing of spaying is sometimes discussed in relation to this risk: speak with your veterinarian, who will weigh this against the other important benefits of spaying.
Seek veterinary advice at the first sign of leakage: an infection or a condition causing increased drinking will be identified sooner.
Keep your dog at a healthy weight.
Possible complications
Urine scald and skin irritation around the vulva, sheath, and inner thighs.
Urinary tract infections, made more likely by leakage.
Skin infections in areas that remain moist.
With overflow incontinence, bladder overdistension and possible kidney damage.
When to see a veterinarian
Your dog is leaking urine and its hind legs are weak or paralysed: seek immediate care.
It is dripping constantly, its abdomen is tense, and it cannot urinate: this is an emergency.
You find urine stains where it has slept.
It is drinking and urinating much more than before.
It is urinating frequently in small amounts, straining, or passing blood in its urine.
The skin around the vulva or sheath is red and irritated.
Prognosis
In the spayed bitch, sphincter weakness is well controlled in many dogs with ongoing treatment, often for life.
Operative correction of ectopic ureter often brings marked improvement, sometimes incomplete.
When the cause is neurological, the prognosis depends on the underlying spinal cord disease.
Frequently asked questions
My dog is drinking a lot and urinating at night: is this incontinence?
Not necessarily. A dog that drinks and urinates excessively may simply lose the ability to hold it at night because its bladder is too full. This occurs in diabetes, Cushing's syndrome, or kidney disease. In true incontinence, the dog drinks normally and leakage occurs without the dog's awareness, especially when sleeping.
Incontinence or cystitis: how to tell the difference?
In cystitis, the dog has very frequent urges, strains to urinate in small amounts, sometimes with blood, and is aware of these urges. In incontinence, the dog urinates normally during walks and leaks urine without being aware of it, especially when lying down. A urinalysis helps distinguish between the two conditions, and cystitis can complicate incontinence.
Should I scold him or give him less to drink?
No. The dog is not controlling these leaks: scolding it does nothing and only causes stress. Limiting water is dangerous: it risks dehydration and urinary tract infections. Talk to your veterinarian instead about appropriate treatment.
Is the treatment for life?
For sphincter weakness, medical treatment is often given long-term, with regular monitoring. For a malformation corrected by surgery, it may no longer be necessary. The veterinarian adapts the duration to each dog.
References
Content reviewed by the TunisieVet editorial team · Updated 11 October 2026
Comments (0)
No comments yet.
AT A GLANCE
Need a veterinarian?
Find a practitioner near you on TunisieVet, with their specialities, hours and contact details.
Find a veterinarianCategories
Affected species
This information is provided for educational purposes only and is not a substitute for a veterinary consultation. If you have any concerns about your animal's health, consult a veterinarian.
Thinking of welcoming a pet? Dogs and cats are waiting for a family in Tunisia, and adoption is completely free.
Adoption listingsOn the TunisieVet marketplace
Food, hygiene and accessories for dog, sold by verified shops and delivered across Tunisia.
Buying advice, not medical advice: for a diagnosis or treatment, consult your veterinarian.
To discover
Related diseases and linked Animalia content.
Canine parvovirus
Viral · Vaccine available
Canine distemper
Viral · Vaccine available
Kennel cough
Viral · Vaccine available
Canine leishmaniasis
Parasitic
